William w



(No Model.)

W. W. FLINT. METALLIC VESSEL.

No. 458,361. Patent-ed Aug. 25, 1891.

/C i f V *v J lr-/ h1: Noam Pneus co., moro-uma., wnmcwon, n. c.

UNITED STATES 4ATENT rrion.

IVILLIAM IV. FLINT, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE CHICAGOSTAMPING COMPANY, OF SAME PLACE.

Nl ETALLIC VESSEL.

SPECIFICATION forming part of Letters Patent No. 458,361, dated August25, 1891.

Application led March 3, 1891. Serial No. 383,566. (No model.)

To all whom it 'may con/cern,.-

.Be it known that I, VILLIAM lV. FLINT, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Metallic Vessels, ofwhich 'the following is a specification, reference being had to theaccompanying drawings, which are 'made a part hereof, and in which-Figures l, 2, 3, and 4 are axial sections showing the parts of a roundvessel at four dliferent stages in the course of its constructionaccording to my invention. Fig. 5 is a plan view of said vessel. In theforegoing figures the invention is shown applied to the top of thevessel. Fig. 6 is a section of a vessel having its bottom secured inplace in accordance with my invention. Fig. 7 is an under side viewthereof. Fig. 8 is a section on a larger scale, showing the shape of theparts when th ey have reached the stage shown in Figs. 4, 5, (i, and 7,only detached fragments being shown.

The object of the present invention is to enable the tops or bottoms ,ofsheet-metal vessels of all sizes and shapes to be secured in place,water-tight, without the aid of solder; and to this end the inventionconsists in a joint or seam of the form set forth in the claimshereinafter.

Referring to the drawings, A represents the body of the vessel, and B isthe sheet or plate of metal which is to form the top or bottom, as thecase may be, the shape and size of which depend upon the shape and sizeof the vessel to be constructed. To prepare the body for the receptionof the plate B, it is bent inward at a, so as to form a flange a', andsaid flange'is bent outward at co2, so as to form a Haring lip a3 andaconsequent undercut groove a4. To prepare the plate B for the body, itis bent at h, so as to form a marginal flange b', the diameter of theplate after this flange is formed being a trifle less than the diameterof the vessel. The plate B is then placed upon the body, as shown inFig. 2, the flange b embracing the lip a3 and extending nearly to theflange a. The bend at h is then increased so as to force the ange b intothe groove a4, as shown in Fig. 8. Pressure in opposite directions isthen applied to the interior of the iiange a and the exterior margin ofthe plate B, (see arrows in Fig. 3,) so as to force the adjacent partsof B b a a3 into parallelism, forming interlocking lips Af and B', (seeFig. 8,) and bending the flange a at a5, so as to cause it to embracethe margin of the plate B, as shown in Fig. It. The outer surface of theplate B may be brought flush with the extremity of the body, or evenwithin said extremity, if desired, by making a suicient bend at a5.

The invention is equally applicable to the tops or bottoms of vessels,and if applied to the tops the plate B may or may not be provided with afilling-orifice C and a cover D for closing it.

Having thus described my invention, the following is what I claim as newtherein and desire to secure by Letters Patent:

l. As a new article of manufacture, a sheetmetal vessel having thecontinuous body A, the ange a', projecting inward from the body andextending completely around it, the outturned lip A on said fiange,andthe plate B, having the inturned lip B', said lips being interlocked andpressed tightly against each other and against the adjacent portions of'the ange d and plate B, forming a seam situated completely within thevessel, substantially a`s set forth.

2. As a new article of manufacture, the sheet -metal vessel having thecontinuous body A, the flange a', proj ecting inward from the body andextending completely around it, the outturned lip A on said flange, andthe plate B, having the inturned lip B', said lips being interlockedwith each other and parallel with the plate B,substantially as setforth.

3. As a new article of manufacture, a sheetmetal vessel having thecontinuous body A, the ange a', situated within the periphery of thebody and extending completely around it, the outturned lip A on saidflange, and the plate B, of less diameter than the body A, having theinturned lip B', the lips of the flange a and plate B being interlockedwith each other and parallel with the plate B, and the flange a beingbent at a5, so as to embrace the periphery of the plate, substantiallyasset forth. y

IVILLIAM XV. FLINT. lVitnesses:

L. M. HOPKINS, J. HALPENNY.

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